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What Is DNS Filtering — and Why Does It Matter for Your Family’s Safety?

March 2026
4 min read
What Is DNS Filtering — and Why Does It Matter for Your Family’s Safety?

What Is DNS Filtering — and Why Does It Matter for Your Family’s Safety?

The Internet Has a Phonebook

Every time you visit a website, your device looks up the address in a system called the Domain Name System (DNS). It works like a phonebook: you type in a name (like google.com), and DNS translates it into a number (an IP address) that your device uses to connect.

This lookup happens for every website, every app, every connected device — usually in milliseconds, completely invisibly.

What DNS Filtering Does

DNS filtering means checking that address against a list of known harmful sites — and refusing to connect if the site is on the list.

When DNS filtering is active:

  • Your device asks to visit a website
  • The DNS filter checks the domain against a database of classified sites
  • If the domain is safe, the connection proceeds normally
  • If the domain is harmful (scam, phishing, malware, adult content), the connection is blocked before the page loads
  • The harmful site never appears. No data is exchanged. The threat is stopped at the lookup stage.

    How It Differs from Antivirus and Parental Control Apps

    Antivirus Software

    Antivirus runs on individual devices. It scans files and downloads for known malware signatures. It does not prevent your browser from connecting to a scam website — it only acts after content has already been downloaded to your device.

    Parental Control Apps

    Parental control apps must be installed on each device individually. They can be uninstalled by tech-savvy children, they often read private messages to monitor behaviour, and they do not protect devices like smart TVs, gaming consoles, or IoT devices.

    DNS Filtering

    DNS filtering works at the network level. It protects most devices connected to your home WiFi — phones, tablets, laptops, smart TVs, gaming consoles, and anything else. There is no software to install on individual devices. It cannot be uninstalled or circumvented by changing device settings.

    What DNS Filtering Can and Cannot Do

    What It Can Do

  • Block known harmful domains (scam sites, phishing, malware, adult content)
  • Enforce SafeSearch on search engines across all devices
  • Block access to social media platforms by profile or time of day
  • Alert you when a threat is blocked or a concerning pattern is detected
  • Protect devices on your network without per-device installation
  • What It Cannot Do

  • Inspect the content of pages you do visit (it checks the domain, not the page content)
  • Read messages, emails, or private chats
  • Replace open conversations with children about online safety
  • Block threats that do not involve a domain lookup (such as content shared peer-to-peer within an app)
  • Being clear about these limitations matters. DNS filtering is a strong layer of protection, but it is not the only layer your family needs. It works best alongside open communication and age-appropriate digital literacy.

    How Manaia Implements DNS Filtering

    DNS filtering is not a niche approach — the Australian Government uses it to protect its own networks. In FY2024–25, Australia’s Protective DNS service (AUPDNS) blocked 334 million malicious domains — a 307% increase from the previous year (ASD Annual Cyber Threat Report 2024–25). Manaia brings the same proven approach to your home.

    Manaia’s DNS filtering is built on live threat intelligence — not a static blocklist that gets updated once a week.

  • 4.8 million classified domains across 9 content categories (adult, gambling, violence, drugs, dating, gaming, social media, streaming, weapons)
  • 250,000+ active threat indicators from 8 intelligence feeds, updated continuously
  • Per-profile rules so different family members get different levels of filtering
  • Real-time alerts when threats are blocked or suspicious patterns are detected
  • AI safety reports that summarise your family’s online activity in plain English
  • All of this runs silently at the DNS level. Your family uses the internet normally. Harmful sites are blocked before they load. You get notified when it matters.


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